Search for: [Abstract = "Material and method.The study covered 182 patients after nephrectomy for various reasons in the period from 1979 to 2008. A part of the studied group consisted of patients being provided health care at the Renal Clinic at the University Hospital and the Małopolskie Complex of Specialist Clinic BATOREGO 3 in Krakow, and the Urology Clinic at the Podkarpackie Voivodeship Hospital in Krosno. Reasons for carrying out nephrectomy in the studied group were not uniform, they included\: kidney cancer, hydronephrosis, pyonephrosis, renal calculus, kidney cysts, renal pelvis tumour, or kidney afunction. The average period of observation of patients was 5.9 years\; minimum time from the operation was 1 year, while the maximum time from the operation reached 30 years. In all patients, the morphological and functional kidney status was evaluated before and after nephrectomy, using ultrasound scanning. The functional status of the remaining kidney was evaluated on a basis of serum levels of creatinine, urea, sodium and potassium, as well as the glomerular filtration rate estimated using Cockcroft\-Gault formula and the abbreviated MDRD formula. Changes in the urinalysis were also evaluated with particular attention paid to proteinuria occurrence, and blood pressure values before and after nephrectomy were verified for possible hypertension. The material was also reviewed for frequency and types of complications occurring in a postoperative period and after a long time in individual patients covered by the study. The collected material was entered into a database developed in the Excel 2003 application. The statistical analysis of the parameters listed above was carried out with SPSS 17.0 PL and Statistica 7.0 PL applications.Results.The average size of kidneys\: length and width as estimated by the ultrasound scan, was analysed for change in the size following nephrectomy, and it was found that the average length and width of the sole kidney remaining after nephrectomy in the long\-term observation increased by 20.54 mm, representing 20.2% of the initial dimension before the operation, and by 6.88 mm, representing 13.5%, respectively, and that was statistically significant for p=0.000. It was also found that average creatinine serum levels increased both in an early and in the long\-term observation by 25.39 mmol\/l and by 4.32 mmol\/l, respectively, and that was statistically significant for p<0\/0001. At the same time a correlation was found between a creatinine level in the long term observation and the age, with p=0.01. It was also verified whether the size of the kidney in the long term observation was correlated with the eGFR value \(Cockcroft\-Gault\) during control after long time from nephrectomy. A correlation was found between eGFR and the kidney length and width in the long term observation, and the age, significance p<0.05. On a basis of calculations it was found that the average eGFR level calculated using the MDRD formula was lower after nephrectomy, both during the early and the long\-term observation, by 2.58 ml\/min\/1.73 and by 6.81 ml\/min\/1.73, respectively. Those differences were statistically significant with p=0.006. On a basis of"]

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